The salesman fast-talked his way around the price question without giving a straight answer.

fast-talked 是动词 fast-talk 的过去式形式。fast 表示"快速的"，talk 表示"说话"，组合起来指"用快速、流利但可能不诚实的言语说服或欺骗他人"，即"花言巧语"或"用言语糊弄"的意思。